Okay So I'm seriously pissed about this issue. I have my usual T-rex miner config setup (Same one I have been using since before my network change) but wen the screen shuts off it seems the miner connection fails which is ridiculous. The only thing changed was I went from the crappy cox all in one gateway modem/router to a Ubiquiti Dream machine pro. My computer is connected via hardwire cat6 and get 7ms pings, 850 mb/s down and no network problems other wise BUT it seems like maybe the dream machine is blocking something at the network level? I have added the entire trex folder to the windows 10 exclusion list and have actually just fully disabled the win10 antivirus for now. The computer is not set to sleep only the screen is. All low power settings are disabled for things such as the the Ethernet NIC and video card. Once the screen shuts off after 10 minutes about 3 minutes later the miner stops connecting with the errors listed in the image attached to link. I am using t-rex-0.19.11-win-cuda11.1 for my MSI RTX 3090 with current
code : t-rex.exe -a ethash -o stratum+tcp://us2.ethermine.org:4444 -u 0xmineraddress -p x -w rig0 pause
https://ibb.co/TWwggdGHi - might also be "green ethernet mode and/or Energy Efficient Ethernet on the modem/router/gateway and your card.
I used to have the worst ever throughput from Truenas until I discovered EEE was enabled by default in consumer goods - I just disabled it everywhere.
Final thought - fake monitor dongle needed?